package com.itheima.reggie.mapper;

import com.itheima.reggie.entity.ShoppingCart;
import org.apache.ibatis.annotations.*;

import java.util.List;

public interface ShoppingCartMapper {

    //查询购物车中当前菜品dishId和套餐setmealId购物车数据
    ShoppingCart findByShoppingCart(ShoppingCart shoppingCart);

    //更新指定购物车菜品数量
    @Update("update shopping_cart set number =#{number} where id=#{id}")
    Integer updateNumber(@Param("id") Long id, @Param("number") Integer number);

    //插入新的一条购物车数据
    @Insert("insert into shopping_cart values(null,#{name},#{image},#{userId},#{dishId}," +
            "#{setmealId},#{dishFlavor},#{number},#{amount},#{createTime})")
    @Options(useGeneratedKeys = true,keyColumn = "id",keyProperty = "id")
    Integer save(ShoppingCart shoppingCart);

    //查询指定用户的购物车集合数据
    @Select("select * from shopping_cart where user_id=#{userId}")
    List<ShoppingCart> findAllByUserId(Long UserId);

    //删除指定用户购物车
    @Delete("delete from shopping_cart where user_id=#{userId}")
    Integer deleteByUserId(Long userId);

}
